Just use a hash is my routine advice - both for clarity and performance.
See also Perl Best Practices (Chapter 6) (O'Reilly)
(or Perl Best Practices (squirrel pdf)):
- 6.16 Value Switches - Use table look-up in preference to cascaded equality tests (item 78)
If performance is critical, you could always benchmark different approaches -
see Fastest way to lookup a point in a set for a simple example of this.
Oh, and don't use Switch! :)
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